public bool Exists(long handle)
{
MemoryStream ms = new MemoryStream();
BinaryWriter writer = new BinaryWriter(ms);
HandleExistCommand.WriteRequest(writer, handle);
Packet packet = new Packet(ms);
Client.Send(packet);
packet.Wait();
return(HandleExistCommand.ReadResponse(new BinaryReader(packet.Response)).Exist);
}
private void DoWork()
{
try
{
TcpServer.Start();
while (!ShutdownTokenSource.Token.IsCancellationRequested)
{
try
{
var order = TcpServer.RecievedPackets.Take(ShutdownTokenSource.Token);
BinaryReader reader = new BinaryReader(order.Value.Request);
MemoryStream ms = new MemoryStream();
BinaryWriter writer = new BinaryWriter(ms);
var code = (RemoteHeapCommandCodes)reader.ReadByte();
switch (code)
{
case RemoteHeapCommandCodes.ObtainHandle:
ObtainHandleCommand.WriteResponse(writer, Heap.ObtainNewHandle());
break;
case RemoteHeapCommandCodes.ReleaseHandle:
{
var handle = ReleaseHandleCommand.ReadRequest(reader).Handle;
Heap.Release(handle);
break;
}
case RemoteHeapCommandCodes.HandleExist:
{
long handle = HandleExistCommand.ReadRequest(reader).Handle;
HandleExistCommand.WriteResponse(writer, Heap.Exists(handle));
break;
}
case RemoteHeapCommandCodes.WriteCommand:
var cmd = WriteCommand.ReadRequest(reader);
Heap.Write(cmd.Handle, cmd.Buffer, cmd.Index, cmd.Count);
break;
case RemoteHeapCommandCodes.ReadCommand:
{
var handle = ReadCommand.ReadRequest(reader).Handle;
ReadCommand.WriteResponse(writer, Heap.Read(handle));
break;
}
case RemoteHeapCommandCodes.CommitCommand:
Heap.Commit();
break;
case RemoteHeapCommandCodes.CloseCommand:
Heap.Close();
break;
case RemoteHeapCommandCodes.SetTag:
Heap.Tag = SetTagCommand.ReadRequest(reader).Tag;
break;
case RemoteHeapCommandCodes.GetTag:
GetTagCommand.WriteResponse(writer, Heap.Tag);
break;
case RemoteHeapCommandCodes.Size:
SizeCommand.WriteResponse(writer, Heap.Size);
break;
case RemoteHeapCommandCodes.DataBaseSize:
DataBaseSizeCommand.WriteResponse(writer, Heap.DataSize);
break;
default:
break;
}
ms.Position = 0;
order.Value.Response = ms;
order.Key.PendingPackets.Add(order.Value);
}
catch (OperationCanceledException)
{
break;
}
catch (Exception exc)
{
TcpServer.LogError(exc);
}
}
}
catch (Exception exc)
{
TcpServer.LogError(exc);
}
finally
{
TcpServer.Stop();
Worker = null;
}
}